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arxiv: hep-ph/0603096 · v1 · submitted 2006-03-13 · ✦ hep-ph

A Remark on Vector Meson Dominance, Universality and the Pion Form Factor

classification ✦ hep-ph
keywords universalitydominancefactorformmesonpionvectoraddress
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In this paper, we address the universality problem in the mass-mixing representation of vector meson dominance. First we stress the importance of using physical (mass eigenstate) fields in order to get the correct $q^2$ dependence of the pion form factor. Then we show that, when a direct coupling of the (proto-)photon to the pions is included, it is not necessary to invoke universality. Our method is similar to the delocalization idea in some deconstrunction theories.

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